People who drank two or more cups of black tea a day had a 9 to 13 percent lower mortality risk, according to the research.
According to a prospective cohort study, drinking black tea may result in a modest reduction in mortality risk. Those who drank two or more cups of tea each day had the lowest risk of death, according to the Annals of Internal Medicine.
Tea is one of the most popular beverages in the world. Previous research has shown a connection between tea consumption and a decreased risk of death in areas where green tea is the most commonly consumed beverage. In contrast, previous research in populations where black tea use is more prevalent yield inconsistent results.
Researchers from the National Institutes of Health examined the interactions between tea consumption and all-cause and cause-specific death. They also examined whether the results varied depending on the use of common tea additives (milk and sugar), tea temperature, and genetic variations that determine how quickly individuals metabolize caffeine.
The Biobank of the United Kingdom has data on half a million people aged 40 to 69 years who completed a baseline survey between 2006 and 2010. 85 percent said they drink tea regularly, with 85 percent saying they drink black tea.
Compared to non-drinkers, participants consumed two or more cups of tea per day, or preferred tea temperature, or caffeine metabolism genetic variations. According to the authors, tea may be an essential part of a healthy diet.
Reference: "Tea Consumption and All-Cause and Cause-Specific Mortality in the UK Biobank" by Maki Inoue-Choi, Ph.D., Marilyn C. Cornelis, Ph.D., Neal D. Freedman, Ph.D., and Erikka Loftfield, Ph.D., 30 August 2022, Annals of Internal Medicine. DOI: 10.7326/M22-0041